Results 81 to 90 of about 12,695 (229)

Wave–particle interactions in tokamaks

Nuclear Fusion
Transport consequences of the wave–particle interactions in the quasilinear plateau (QP) regime are presented. Eulerian approach is adopted to solve the drift kinetic equation that includes the physics of the nonlinear trapping (NT) and QP regimes.
K.C. Shaing, M. Garcia-Munoz, E. Viezzer, R.W. Harvey   +3 more
doaj   +1 more source

Stark-Zeeman Line Shape Modeling for Magnetic White Dwarf and Tokamak Edge Plasmas: Common Challenges

Atoms, 2017
The shape of atomic spectral lines in plasmas contains information on the plasma parameters, and can be used as a diagnostic tool. Under specific conditions, the plasma located at the edge of tokamaks has parameters similar to those in magnetic white ...
Joël Rosato, Ny Kieu, Ibtissem Hannachi, Mohammed Koubiti, Yannick Marandet, Roland Stamm, Milan S. Dimitrijević, Zoran Simić   +7 more
doaj   +1 more source

Two-fluid Analysis of the Geodesic Acoustic Mode in Tokamaks

, 2011
In most analysis reported so far on the geodesic acoustic mode (GAM) in tokamaks, the current along the magnetic field has been assumed to vanish, J∥ = 0.
Hirose, Akira, Weiland, Jan, Hirose, Akira,, Weiland, Jan,, Enzo Lazzaro, Jan Weiland, Akira Hirose   +6 more
core   +1 more source

Elementary Processes Underlying Alpha Channeling in Tokamaks [PDF]

, 2012
Alpha channeling in tokamaks is speculative, but also extraordinarily attractive. Waves that can accomplish this effect have been identified. Key aspects of the theory now enjoy experimental confirmation.
Fisch, NM.J., N. J. Fisch
core   +1 more source

Analysis of sawtooth relaxation oscillations in tokamaks [PDF]

, 1982
Sawtooth relaxation oscillations are analyzed using the Kadomtsev's disruption model and a thermal relaxation model. The sawtooth period is found to be very sensitive to the thermal conduction loss.
McGuire, K., Yamazaki, K., M. Okabayashi, K. Yamazaki, Okabayashi, M., K. McGuire   +5 more
core   +1 more source

Power and particle exhaust in tokamaks [PDF]

, 1998
The status of power and particle exhaust research in tokamaks is reviewed in the light of ITER requirements. There is a sound basis for ITER`s nominal design positions; important directions for further research are ...
Stambaugh, R.D.
core  

Bifurcated Helical Core Equilibrium States in Tokamaks

, 2012
Tokamaks with weak to moderate reversed central shear in which the minimum rotational transform $q_{min}$ is in the neighbourhood of unity can trigger bifurcated MagnetoHydrodynamic (MHD) equilibrium states, one of which is similar to a saturated ...
Lao, L., Cole, A. J., Lazarus, E. A., Sauter, O., Buttery, R., Hanson, J., Graves, J. P., Halpern, F., van Zeeland, M., Reimerdes, H., Labit, B., van Zeeland, M. A., Evans, T. E., Rossel, J., Chapman, I. T., Pfefferlé, D., Ferron, J. R., Brunetti, D., Tobias, B., Turnbull, A. D., Cooper, W. A., Hollman, E., Coda, S., Schmitz, O., Pochelon, A., Duval, B. P., Jardin, S. C., Albergante, M., Fernstermacher, M. E., Tobias, B. J., Rosse, J., Lao, L. L., Turco, F., Lanctot, M. J., Petty, C.   +34 more
core  

Numerical study of precession of circulating particles in tokamaks

, 2011
The toroidal precession of circulating particles in tokamaks is studied numerically. The dependence of the precession frequency on the magnetic shear, the elongation of the plasma cross-section, and plasma pressure is investigated.
S. SIPILÄ, YA. I. KOLESNICHENKO, YU. V. YAKOVENKO, O. S. BURDO   +3 more
core   +1 more source

Investigating long-duration plasma operation with the international multi-machine CICLOP database

Nuclear Fusion
Combined high-fusion performance and long-pulse operation is one of the key integration challenges for fusion energy development in magnetic devices. Addressing these challenges requires an integrated vision of physics and engineering aspects with the ...
X. Litaudon, E. Lerche, O. Grulke, C.T. Holcomb, J. Huang, M. Jakubowski, H.S. Kim, P. Manas, T. Morisaki, F. Turco, M. Barbarino, E. Belonohy, A. Bock, S. Brezinsek, J. Bucalossi, S. Coda, L.F. Delgado-Aparicio, P. De Vries, A. Ekedahl, L. Frassinetti, A. Garofalo, C. Giroud, X. Gong, K. Hanada, S. Ide, B.V. Kuteev, P. Maget, J. Stober, D. Van Houtte, the IEA-IAEA Coordination on International Challenges on Long duration OPeration (CICLOP) group   +29 more
doaj   +1 more source

Mode particle resonances during near-tangential neutral beam injection in large tokamaks

, 1988
Coherent magnetohydrodynamic modes have been observed during neutral beam injection in TFTR and JET. Periodic bursts of oscillations were detected with several plasma diagnostics, and Fokker-Planck calculations show that the populations of trapped ...
Morris, A. W., S.D. Scott, R.B. White, K.M. McGuire, E.D. Fredrickson, Medley, S. S., McGuire, K. M., A.W. Morris, R. Kaita, White, R. B., Fredrickson, E. D., S.S. Medley, Kaita, R., Scott, S. D.   +13 more
core   +1 more source